Grain-drill tube.



PATENTED MAR. 18, 1906.

H 0. HAM. GRAIN DRILL TUBE. APPLIOATION FILED OCT. 25, 1905.

ITE STATES PAETENT OFFICE. I

HENRY C. HAM, LIBERTY, INDIANA, ASS'IGNOR TO THE RUDE BROTHERS MANUFACTURING COMPANY, OF LIBERTY, INDIANA, A CORPORATION OF INDIANA.

GRAIN-DRILL TUBE.

Specification of Letters Patent.

Patented March 13, 1906.

1 Application filed October 25,1905. Serial No. 284,361.

To all whom it may concern;

Be it known that I, HENRY HAM, a citizen of the United States, residing at Liberty,

in'the county of Union and State of Indiana,

' grain-drills, more artioularly of that class in which spiral wire orms the body of the tube; and the purpose of my invention is to provide a tube, collapsible when desired, in which the spiral wire will not kink and become permanently distorted when meeting obstructions on the field. Such tubes are usually provided at the upper end with a metallic cup or receiver, which is suspended from the drill underneath the seed-cups to receive the seed and convey it through the tubes to the hoes and the soil, and heretofore with spiral-wire tubes such tubes have been riveted or otherwise secured outside the seedreceiver, so that in order to -fit'over the discharge-opening of the receiver these spiral tubes have been constructed cone-shaped at the upper end. As the spiral wire is uniform in gage, the wider coils at the upper end have less strength than the coils of the'minimum diameter below, and the strain of an obstructionagainst the spiral tube is'very apt to pull out and distort the up er coils, so that they will remain permanent y out of shape.

The first object of my invention is to. obviate this objection to the. spiral-wire tubes,

which I accomplish by providing a tube secured inside the seed-receiver and in which which it is the purpose of another feature of.

my invention to avoid by a simple, cheap, and eifective construction in which the telescopic connection of the parts is accomplished is a central vertical section of same. is a side elevation of the tube collapsed. Fig.

alone somewhat enlargedin size.

by washers secured on the outside of one portion and the inside of the other in the manner to be. hereinafter described and claimed.

With this construction, also with a spiral-wire upper section and a rubber extension, when the extension-tubes are not in use they are telescoped outside the wire tube, thus preventing the rubber tubes from permanent kinks and bends, which are apt to result where the rubber tubes have been flattened or bent for any considerable length of time.

In the drawings, Figure 1 is a side elevation of my'improved grain-drill tube. Fig. 2 Fig. 3

4 isa side elevation of the spiral-wire tube Fig. 5 is a perspective view of the washer for the wire tube when used with telescopic. extension.

1 is the metallic seed-receiver, which is hung or pivoted underneath the seeding devices of the drill.

2 is the spiral-wire tube, of unifor'mdiameter throughout and the upper end of which is secured inside theseed-receiver in any de. sired way, the preferable method being to screw-thread the delivery-throat of the receiver, as shown at 3 in Fig. 2, and to screw the coil of wire into place so that the inside of the wire tube will be flush with the inner surface of the seed-receiver. When the tube is otherwise secured, as by riveting, the inner surface of the receiver is also recessed, so that theinside of the tube will be flush with the surface of the receiver above the point of attachment. Thisspiral tube is made long enough to be used alone, and inasmuch as all of the wire coils below the receiver are of. uniform diameter the coil will withstand uniformly all the strains to which it maybe subjected without permanent distortion. The upper attaching end of the coil may vary in diameter the exposed portion of the wire tube shall be' ing and will not admit the spiral-wire tube. 5 is a collar or washer around which the upper end of the rubber tube is secured by the wire 6. 7 is a washer, preferably made of a wire coil of somewhat larger diameter than the wire tube, which is screwed on the lower end of the spiral tube. Then the extensiontube is slipped over the wire tube before it is attached to the seed-receiver. The wire tube is then secured to the seed-receiver, and the tube is ready for use. By using a wire-coil washer the coils of the washer enter somewhat between the coils of the tube, so that an extension-tube of somewhat smaller diameter can be used than would be the case if an ordinary annular washer were merely secured to the coil.

Having thus described my invention, what I claim as new, and desire to secure by Let ters Patent, is

1. In a grain-drill tube, the combination, with a seed-receiver, and a delivery-tube secured thereto, of a telescopic extension-tube therefor, with Washers on the outside of one and the inside of the other tube, for holding the two together.

2. In a grain-drill tube, the combination, with a seed-receiver, and a spiral-Wire tube of uniform diameter throughout, of a telescopic extension-tube therefor, with washers on the outside of the lower end of the spiral tube,

and on the inside of the upper end. of the extension-tube, for holding the two together.

3. In a grain-drill tube, the combination, with a seed-receiver, and a spiral-wire tube of uniform diameter throughout, of a telescopic rubber eXtensiontube therefor, with washers on the outside of the lower end of the spiral tube and on the inside of the upper end of the rubber extension-tube for holding the two together.

4. In a grain-drill tube, the combination with a seed-receiver, and a cylindrical wire tube adapted to screw into said receiver, of a telescopic rubber extension-tube therefor, with a coiled-wire washer screwed onto the lower end of the wire tube, and a washer on the inside of the rubber extension to engage said wire washer.

5. In a grain-drill tube, the combination with a seed-receiver, and a spiral-wire tube of uniform diameter throughout adapted to screw into said receiver, of a telescopic rubber extension-tube therefor, with a coiled wire washer screwed onto the lower end of the wire tube and a washer on the inside of the rubber extension to engage said wire washer.

HENRY C. HAM. Witnesses:

OWEN RARIDEN, HERBERT DARK. 

